feat(version): mostra build time nel badge (non solo tooltip); bump 1.0.2

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

VERSION

@@ -1 +1 @@
-1.0.1
+1.0.2

web/app.js

@@ -747,7 +747,7 @@ async function refreshAppVersion() {
   try {
     const r = await api('GET', '/api/version');
     const pill = $('appVersionPill');
-    if (pill) { pill.textContent = `V${r.version}`; pill.title = `build ${r.build_time}`; }
+    if (pill) { pill.textContent = `V${r.version} · ${r.build_time}`; pill.title = `versione ${r.version} · build ${r.build_time}`; }
   } catch {}
 }
 refreshAppVersion();